5. Slowly decrease the frequency of the applied voltage until the BFI_3P signalappears.6. Slowly decrease the positive-sequence voltage of the injected voltage below theVLowLimit value until the BFI_3P signal disappears.7. Check that the VOLTOK signal disappears.8. Compare the reset value to the set voltage low limit value.9. Readjust the positive-sequence voltage of the applied voltage to a value within theset voltage band limits.10. Check that the BFI_3P signal reappears.11. Slowly increase the positive-sequence voltage of the injected voltage above theVUHighLimit value until the BFI_3P signal disappears.12. Compare the reset value to the set voltage high limit value.13.7.4.2 Completing the test GUID-83C3F041-9553-4804-9A39-B3E46A5C9AE6 v2• Continue to test another function or end the test by changing the Test mode settingto Disabled.• Restore connections and settings to their original values if they were changed fortesting purposes.13.8 Multipurpose protection SEMOD53552-1 v113.8.1 General current and voltage protection CVGAPC SEMOD56488-3 v3Prepare the IED for verification of settings as outlined in section "Requirements" andsection "Preparing for test" in this chapter.One of the new facilities within the general current and voltage protection functionCVGAPC is that the value, which is processed and used for evaluation in the function,can be chosen in many different ways by the setting parameters CurrentInput andVoltageInput.These setting parameters decide what kind of preprocessing the connected three-phaseCT and VT inputs shall be subjected to. That is, for example, single-phase quantities,phase-to-phase quantities, positive sequence quantities, negative sequence quantities,maximum quantity from the three-phase group, minimum quantity from the three-phase group, difference between maximum and minimum quantities (unbalance) canbe derived and then used in the function.Due to the versatile possibilities of CVGAPC itself, but also the possibilities of logiccombinations in the application configuration of outputs from more than one CVGAPC1MRK 502 073-UUS A Section 13Testing functionality by secondary injectionGenerator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062 237Commissioning manual
